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Chapter 1: Properties of Adhesives

From Properties of Adhesives

An adhesive can be defined as a substance that is capable of holding materials together by surface attachment. Surfaces on which an adhesive is applied are known as adherends, while the process of holding multiple adherends together by adhesion is called bonding. The total system, consisting of adherend and adhesive, is called a bond or joint.

This handbook discusses the advantages, classification, and properties of adhesives.

Using Adhesives

A good adhesive possesses the following qualities:

  • The degree of stickiness is high.

  • Bonding takes less time.

  • On drying, the bond setting exhibits high strength.

  • Durability is high.

Advantages of Adhesives

The advantages of adhesives are:

  • High heat is not required for bonding.

  • Adhesives can be applied to the surfaces of any material, such as glass and metal, metal and metal, metal and plastic, plastic and plastic, and ceramic and ceramic.

  • Bonding between surfaces occurs easily and quickly.

  • Two surfaces or materials joined using adhesives are notably free off any residual stresses. This makes it possible to utilize fully the inherent strength of any material.

  • Adhesives are electrical and thermal insulators.

  • The application of adhesives is a very simple process.

  • Adhesives reduce galvanic corrosion along the joints of dissimilar metals.

  • Adhesive joints are Ieak-proof for gases and liquids.

  • Adhesives are corrosion resistant.

Disadvantages of Adhesives

The primary disadvantages of adhesives are:

  • Adhesives cannot be applied at elevated temperature because most of them are prepared from organic materials. The bond strength of adhesives decreases rapidly with the rise in temperature.

  • There is...

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Products & Services
Cyanoacrylate adhesives are one-part acrylate adhesives that cure instantly on contact with mated surfaces through a reaction with surface moisture. Cyanoacrylates are often called super glues.  Search by Specification | Learn more about Cyanoacrylate Adhesives
Polyurethane adhesives and sealants provide excellent flexibility, impact resistance, and durability. They are available in one-part or two-part systems. Search by Specification | Learn more about Polyurethane Adhesives and Sealants
Packaging tapes and films are used to seal or wrap boxes, bottles or other packages. Search by Specification | Learn more about Packaging Tapes and Films
Adhesive tapes and films temporarily or permanently join materials together. Search by Specification | Learn more about Adhesive Tapes and Films
Rubber adhesives and sealants are highly flexible, natural or synthetic materials that are used to join components or fill gaps between seams or on surfaces. Search by Specification | Learn more about Rubber Adhesives and Sealants
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Topics of Interest
Adhesive Action Some chemical or physical forces of attraction are responsible for holding material by adhesion. These forces are called specific adhesion. The adhesives are applied on the surface... (Read More)
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